Opinion from a prominent SaudiSadad Al-Husseini one of the world's foremost oilmen former executive vp of Saudi Aramco the world's biggest oil company is becoming bullish on oil even as Brent prices sink."If you go down low enough, as we are now,you'll get to the point where there is little investment, which is what we are going through,"he said in an interview."You will force the excess out of the market and demand will take you back up. That's what is about to happen". Regarding U.S. shale producers he feels confident that waning investment is already hitting production growth and that prices won't fall much further as the supply balance tightens up."When prices go down 40%, you're not going to keep spending like there is no change. My guess is that by the end of the 2nd quarter of 2015, there will be a returning confidence in oil. Does it mean it will go to $115? No that was never sustainable.Could it go to $80, maybe $90? Sure." The oil rig count in the U.S. shale areas has dropped significantly as has the number of permits for new wells.